Siemens S120 - Electrical Connection

Power Modules
4.4 Power Modules Chassis
AC Drive
170 Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4
4.4.5
Electrical connection
Adjusting the fan voltage (-T10)
The power supply for the device fans (1-phase 230 VAC) in the Power Module (-T10) is
taken from the line supply using a transformer. The mounting position of the transformer is
shown in the interface descriptions.
The transformers are fitted with primary taps so that they can be fine-tuned to the line
voltage. When delivered, the taps are always set to the highest level. With a low supply
voltage, the appropriate transformer tap must be activated.
The connections at the setting terminals must be connected to "0" and the line voltage.
Figure 4-62 Setting terminals for the fan transformers
The supply voltage assignments for making the appropriate setting on the fan transformer
are indicated in the following table (factory presetting): 480 V/0 V)
WARNING
Danger of fire due to overheating resulting from insufficient equipment fan voltage
If the terminals are not reconnected to the actual line voltage, overheating and human
danger due to smoke and fire may result. Moreover, the fan fuses may blow due to
overload.
• Assign the terminals in accordance with the actual line voltage.
Table 4- 37 Assignment of the existing line voltage for setting at the fan transformer
Line voltage
Tap at the fan transformer (-T10)
380 V ± 10% 380 V
400 V ± 10%
400 V
440 V ± 10%
440 V
480 V ± 10%
480 V